Namaacha District is a district of Maputo Province in southern Mozambique. The principal town is Namaacha. The district is located in the southwest of the province, and borders with Moamba District in the north, Boane District in the east, Matutuíne District in the south, and with Eswatini and South Africa in the west. The area of the district is 2,196 square kilometres (848 sq mi). It has a population of 41,914 as of 2007.